CN110301815B - Method for opening and closing pot cover and inner pot - Google Patents

Abstract

A method for opening and closing a pot cover and an inner pot. The cooking utensil includes a pot base, an inner pot placed on the pot base, and a pot cover reversibly hinged on the rear end of the pot base. The inner pot has a rigid pot protruding outward. Along the side, the pot cover includes an outer cover and a rigid member installed under the outer cover. The pot cover is used to cover the mouth of the inner pot based on a closing action; it is characterized in that a double lock mechanism is provided, and the double lock mechanism is included in the pot. In the environment where the base and the lid are closed, not only the rigid member and the rigid pot edge are locked, but also the inner pot and the pot base are locked; when the inner pot is placed on the pot base before the lid is closed, the inner pot is first locked. Lock with the base of the pot, and then respond to a lid-closing command action that allows flipping and closing the lid, and lock the rigid member and the rigid pot edge to complete the double-lock mechanism to achieve a flip-closing lid; respond to a lid-opening command that allows , at least release the locking between the rigid member and the rigid pot edge so as to realize one-key opening.

Description

How to open and close the lid and inner pot

technical field

The invention relates to a cooking utensil that can be used for cooking food, in particular to a cooking utensil with a double safety locking structure, the cooking utensil can realize one-turn cover and one-key open cover, which is very convenient.

Background technique

The pressure cooker is a common kitchen cooking utensil in daily life. It uses the principle that the boiling point of the liquid increases with the increase of the air pressure to create a high-pressure cooking environment in the food cooking cavity of the pressure cooker, thereby achieving the effect of speeding up the cooking of food. The air pressure in the food cooking cavity is very large, often as high as above 4KPa. If the lid of the pressure cooker is accidentally opened under the force of high-pressure expansion, it will inevitably cause serious injury to the user. In order to avoid accidents, the traditional solution is to set a plurality of upper-swivel pot teeth arranged at intervals on the outer edge of the pot cover, and to set a lower-swirl pot tooth on the top of the pot base to match the upper-swivel pot teeth. The pot cover is tightly locked to the pot base through the screw connection between the upper-rotating pot teeth and the lower-rotating pot teeth. However, such a structure limits that the pot cover and the pot base must only be installed in a rotational manner, and the pot cover and the pot base must also only have a separate structure. No matter be to install described pot cover on the described pot base like this, or disassemble described pot cover from described pot base, all must use both hands to operate, very inconvenient.

In order to solve the above-mentioned problems, a clip-type lid structure was proposed later. For example, the micro-piezoelectric rice cooker disclosed in patent 201710108580.X includes a pot body 1 and a pot cover 2, one end of the pot cover 2 is hinged on the pot body 1, and an inner pot 3 is placed in the pot body 1, so The pot cover 2 includes an outer cover and an inner cover 4, and the inner cover 4 can be covered on the inner pot 3 so that the inner pot 3 forms a relatively sealed cooking cavity. A clamping portion that can float up and down is provided on the inner cover 4 , and the clamping portion includes a caliper 7 and a caliper bracket 8 . The caliper 7 can clamp the edge of the inner cover 4 and the rim of the inner pot to realize the locking of the inner cover 4 and the inner pot 3 . On the basis of using the clamping part to realize the locking of the inner cover 4 and the inner pot 3, a hinge structure can be adopted between the pot cover 2 and the pot body 1, which facilitates the operation of the pot cover 2 opening and closing operations.

Contents of the invention

The inner cover of the micro-voltage rice cooker disclosed in the patent 201710108580.X is clamped by the caliper to keep the inner cover closed on the inner pot. But because described pot cover is hinged on described pot body, in order to allow described pot cover to open automatically, often also be provided with the driving button spring that can drive described pot cover to open automatically. The torsion force of the driving ring spring is very large, and the pot cover and the inner pot may be lifted together so that the inner pot is separated from the heating plate on the pot body, which not only affects the use, but also damages the inner pot. The overall appearance of the cooking appliance. How to ensure the use safety of the cooking utensil and make the pot cover stably cover the pot body is a technical problem that needs to be further solved.

Aiming at the deficiencies of the prior art, the present invention proposes a method for opening and closing a pot cover and an inner pot. The cooking utensil includes a pot base, an inner pot placed on the pot base, and an inner pot reversibly hinged on the pot base. The pot cover on the rear end, the inner pot has an outwardly protruding rigid pot rim, the pot cover includes an outer cover and a rigid member installed under the outer cover, and the pot cover is used for When the lid is closed, it covers the mouth of the inner pot; it is characterized in that a double lock mechanism is provided, and the double lock mechanism includes not only placing the rigid member Lock with the edge of the rigid pot, and lock the inner pot with the pot base; Wherein, when placing the inner pot on the pot base before closing the lid, first connect the inner pot with the pot base The base of the pot is locked, and then in response to a cover command action that allows flipping and closing the lid, the rigid member and the rigid pot edge are locked to complete the double locking mechanism to realize a flipping lid; response In response to an allowed lid opening instruction, at least the locking between the rigid member and the rigid pot rim is released, so as to realize one-button lid opening.

According to the above technical solution, compared with the prior art, the beneficial technical effect of the present invention lies in that, due to the provision of the double lock mechanism, compared with the prior art, not only through the locking between the rigid member and the rigid pot edge, It simplifies the sealing scheme of the inner pot, and also simplifies the lid closing scheme of the whole cooking utensil, especially improves the connection stability and stability of the connection between the outer cover of the pot lid and the pot base during cooking. Controllability; wherein, the second locking mechanism is used to lock and connect the inner pot and the pot base when placing the inner pot on the pot base before closing the lid, as described The outer cover is stably closed on the pot base through its connecting relationship with the rigid member and the locking relationship between the rigid member and the rigid pot edge, and it is also possible to directly place the inner pot in the correct position. The posture is placed on the base of the pot to ensure the normal use of the cooking utensil. In addition, since the one-key opening of the lid is realized, the lid opening operation of the pot can be completed simply and conveniently, thereby improving the convenient application experience of the cooking utensil.

A further technical solution may also be that, after the one-key opening is completed, in response to an instruction to allow the inner pot to be opened, the lock between the inner pot and the pot base is released so that the inner pot can be taken out.

A further technical solution may also be that, in response to an allowed lid opening command, with the help of the driving force provided by the lid opening command, the locking between the rigid member and the rigid pot edge is automatically released to achieve a key to open the cover.

If the lid of the inner pot is opened when the cooking environment in the inner pot is in a state of high pressure or high temperature, the food in the pot will spray out and burn the user, and even the lid will be blown out under the action of high pressure and hurt the user. Otherwise, this is very threatening. So it is necessary to limit the opening conditions of the pot cover. A further technical solution may be that the unlocking action between the rigid member and the rigid pot edge is subject to the internal pressure or temperature of the inner pot, when the internal pressure or temperature of the inner pot is higher than When the threshold value is reached, the unlocking action between the rigid member and the rigid pot edge is limited by the self-locking mechanism.

A further technical solution may also be that the self-locking mechanism includes a self-locking column, the self-locking mechanism is arranged on the rigid member, and the self-locking column responds to the internal pressure or temperature of the inner pot And limit the unlocking action between the rigid member and the rigid pot edge. Utilizing the above technical solution, it can be realized that when the internal pressure or temperature of the inner pot is higher than the threshold value, the unlocking between the rigid member and the rigid pot rim is restricted by the self-locking column, at this time, the pot cover cannot be opened. Only when the internal pressure or temperature of the inner pot is lower than the threshold value, the self-locking column releases the locking between the rigid member and the rigid pot edge, and the pot cover can be opened at this time, thus effectively improving The safety performance of cooking utensils.

A further technical solution may also be that the rigid member is the inner cover of the pot cover, and the inner cover is used to cover the mouth of the inner pot during a closing action.

A further technical solution may also be to set two locking mechanisms, that is, a first locking mechanism and a second locking mechanism, and the first locking mechanism locks the rigid member and the rigid pot edge in response to the lid closing action command, so The second locking mechanism locks the rigid pot edge and the pot base; an unlocking device is provided, and the unlocking device transmits an instruction to open the cover, and drives the first locking mechanism to release the lock between the rigid member and the rigid pot base. along the lock between.

A further technical solution may also be that an inner pot release device is also provided on the pot base, and the inner pot release device is activated to drive the second locking mechanism to release the lock between the inner pot and the pot base .

A further technical solution may also include a central controller and a position sensor, through which the sensor senses that the locking mechanism completes the position signal that the double locking mechanism is in place and feeds back the position signal to the central control device, the central controller determines whether to start heating or pressurizing according to the position signal.

A further technical solution may also include a display, through which an analog signal indicating that the double locking mechanism has been implemented is displayed.

Because the present invention has above-mentioned characteristics and advantage, can be applied in the opening and closing method of pot lid and inner pot for this reason.

Description of drawings

Fig. 1 is a top view structural diagram of a cooking utensil with a separate safety locking structure applying the technical solution of the present invention;

Fig. 2 is a schematic cross-sectional structure diagram of the A-A direction in Fig. 1;

Fig. 3 is the sectional structure schematic diagram of B-B direction in Fig. 1;

Fig. 4 is the sectional structure schematic diagram of C-C direction in Fig. 2;

FIG. 5 is a schematic diagram of the three-dimensional structure of the outer cover 21;

Fig. 6 is a schematic diagram of the three-dimensional structure of the shown pot cover 2, and the decorative surface cover 23 is omitted among the figures;

Fig. 7 is the second installation structure of the tension spring.

Detailed ways

The structure of the cooking utensil applying the technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

As shown in the figure, the present invention proposes a cooking appliance with a separate safety locking structure. The cooking utensil comprises a pot base 1, an inner pot 11 placed on the pot base 1 and a pot cover 2 reversibly hinged on the rear end of the pot base 1, the inner pot 11 has an outwardly convex The pot lid 1 is used to cover the mouth of the inner pot 11 based on a lid closing action. Wherein, the pot cover 2 includes an outer cover 21, a decorative surface cover 23 installed on the outer cover 21, a rigid member 22 installed below the outer cover 21, and the rigid member 22 is used to bear or share all Describe the air pressure in the inner pot 11. In this embodiment, the rigid member 22 is the inner cover of the pot cover 2, and the inner cover is used to cover the mouth of the inner pot 11 based on a closing action. It also includes a locking mechanism, the locking mechanism is used to complete the double locking mechanism, the double locking mechanism includes not only connecting the rigid member 22 with the between the rigid pot edge 110, and lock the inner pot 11 and the pot base 1; wherein, the locking mechanism includes a first locking mechanism 100 and a second locking mechanism 100a, and the first locking mechanism The mechanism 100 is used to lock the rigid member 22 and the rigid pot edge 110 in response to a lid-closing command action of the pot lid 2 that allows flipping and closing the lid. The second locking mechanism 100a is used to When placing the inner pot 11 on the pot base 1, the inner pot 11 and the pot base 1 are locked and connected first. An unlocking device 200 is also included, and the unlocking device 200 is used for transmitting a lid opening instruction, at least driving the first locking mechanism to release the locking between the rigid member and the rigid pot rim.

As shown in Figures 1 and 2, the locking mechanism includes a first locking mechanism 100, and the first locking mechanism 100 includes a pair of left and right supporting frames (3, 3a), the support frame (3, 3a) can not only move relatively close to the center of the outer cover 21 in response to the action of closing the cover, but also respond to the opening of the cover transmitted by the unlocking device 200 Command and relatively move away from, that is, move toward the outside of the outer cover 21 . Two rigid holders 4 (respectively rigid holder 4a and rigid holder 4b, rigid holder 4c and rigid holder 4d) are arranged on the support frame (3, 3a). Of course, in other In the embodiment of the present invention, three, four or even more of the support frames may be set, and it is also feasible to set one, three or even more of the rigid holders for each support frame), and the rigid clamp The device 4 has an upper jaw edge 41, a lower jaw edge 42, and a jaw connection wall 43 connected between the upper jaw edge 41 and the lower jaw edge 42. A jaw 40 is formed between the upper jaw edge 41, the lower jaw edge 42 and the connecting wall 43 (of course, in other embodiments, each of the rigid holders 4 can also be provided with two, Three or more of said jaws are also possible). The rigid holder 4 is used to hold the rigid member 22 and the The rigid pot rim 110 of the inner pot 11, the rigid holder 4 is also used to release the inner pot when the support frames (3, 3a) respectively carry it to the outer side of the outer cover 21 11 along the 110 of the rigid pan. In order to be able to drive the support frame (3, 3a) to move toward the center of the outer cover 21 and keep the rigid holder 4 on the support frame (3, 3a) in a clamping state, the locking mechanism It also includes a locking driver, which is a tension spring 6 with reset driving force, and the two ends of the tension spring 6 are respectively connected to a pair of left and right support frames (3, 3a). The tension spring 6 is used to drive the support frame ( 3 , 3 a ) to move towards the center of the outer cover 21 in response to the action of closing the cover.

The unlocking device 200 includes an intermediate transition arm body 5 movably arranged on the outer cover 21, the intermediate transition arm body 5 is associated with the support frame (3, 3a), specifically the intermediate transition arm body 5 A pair of support frames (3, 3a) arranged left and right are respectively indirectly supported by a pair of swing arms (51, 52). Of course, in other embodiments, it is also possible that the intermediate transition arm body 5 directly abuts against a pair of support frames ( 3 , 3 a ) arranged left and right. When the intermediate transition arm body 5 has a positive movement moment and moves forward in response to the cover opening command, it can drive the support frame (3, 3a) to move away from each other, that is, to move toward the outside of the outer cover 21, And also drive described tension spring 6 to open energy storage. When the intermediate transition arm body 5 loses the positive movement moment in response to the action of closing the cover, the tension spring 6 can drive a pair of the support frames (3, 3a) to move relatively close together, that is, toward the outer cover 21 The movement in the center direction, and the power of the pair of support frames (3, 3a) moving relatively close can reversely drive the intermediate transition arm body 5 to move in the opposite direction.

In addition, in other embodiments, the tension spring 6 can also adopt another installation structure, as shown in Figure 7, one end of the tension spring 6' is connected to the outer cover 21' and the other end Connected to the intermediate transition arm body 5', the intermediate transition arm body 5' is movably connected to the support frame (3', 3a'). There are many kinds of flexible connection structures between the intermediate transition arm body 5' and the support frame (3', 3a'), for example, the support frames (3', 3a') are respectively provided with inclined In the chute (30', 30a'), the middle transition arm body 5' is provided with dialing arms (51', 52') respectively extending into the chute (30', 30a'). When the intermediate transition arm body 5' has a positive movement moment and moves forward, it can drive a pair of The support frame (3', 3a') moves to the outside of the outer cover 21' and drives the tension spring 6' to expand and store energy, otherwise when the intermediate transition arm body 5' loses its normal position in response to the action of closing the cover, When the torque is moving, the tension spring 6' can cooperate with the shifting arm (51', 52') to drive the support frame (3', 3a') through the chute (30', 30a') Relatively approaching movement means moving towards the center of the outer cover 21', and can also drive the intermediate transition arm body 5' to move in the opposite direction. Of course, in other implementation manners, the intermediate transition arm body 5' can also be movably connected to the support frames (3', 3a') through swing arms.

According to the above technical solution, the tension spring 6 can move the rigid holder 4 on the support frame (3, 3a) toward the center of the outer cover 21 and keep it in the clamping state, but the tension spring 6 cannot prevent the forward movement of the intermediate transition arm body 5 from driving the support frame ( 3 , 3 a ) to move toward the outer side of the outer cover 21 . In addition, the tension spring 6 forms a flexible connection between the pair of support frames (3, 3a), which is beneficial to allow the rigid holder 4 to flexibly adjust the clamping position to suitably clamp the rigid member 22 and the rigid pot rim 110 of the inner pot 11, avoiding the occurrence of factors such as assembly errors, manufacturing errors, or deformation of the rigid member 22 and the rigid pot rim 110 of the inner pot 11 during use. The rigid holder 4 cannot be clamped to the rigid member 22 and the rigid pot edge 110 of the inner pot 11, thereby increasing potential safety hazards, so the above scheme can improve the operational stability and safety of the cooking utensils, and reduce equipment Operational errors. Except that the locking driver can be the tension spring 6, in other embodiments, the locking driver can also be a pair of first magnets (not shown in the figure) that can attract each other, and a pair of the first magnets can attract each other. A magnet is separately arranged on a pair of left and right support frames (3, 3a). When the intermediate transition arm body 5 has a positive movement moment and moves forward, it can resist the mutual magnetic attraction force between the first magnets and drive a pair of the support frames (3, 3a) towards the outer cover 21. On the contrary, when the intermediate transition arm body loses the moment of positive movement in response to the action of closing the cover, the first magnet can drive the support frame (3, 3a) to move relatively close to the outer cover 21 to move in the center direction, and can also drive the intermediate transition arm body 5 to move in reverse.

Further, second magnets (not shown in the figure) capable of attracting each other are respectively provided on the outer cover 21 and the intermediate transition arm body 5, when the intermediate transition arm body 5 loses When the torque is moved forward, the intermediate transition arm body 5 will bear double driving force capable of driving it to move in the reverse direction. One driving force comes from the magnetic attraction driving force of the second magnet, and the other driving force comes from the said second magnet. Direct or indirect driving force of tension spring 6. The second magnet cooperates with the tension spring 6 to drive the intermediate transition arm body 5 to move in reverse.

As shown in Fig. 3, Fig. 5 and Fig. 6, the connection relationship between a pair of said support frames (3, 3a) and said outer cover 21 is the same, and the connection relationship between said support frame 3 and outer cover 21 is used below The connection relationship among them is introduced as an example. Two avoidance notches (210, 211) are provided on the left side of the outer cover 21, which are left and right respectively. Wherein, the rigid holder 4a is arranged in the avoidance gap 210, the upper jaw edge 41 of the rigid holder 4a is arranged above the rigid member 22, and the lower jaw edge 42 is arranged below the rigid member 22 . Threaded pillars (212, 213) are arranged on the outer cover 21, and the pillars (212, 213) respectively pass through the support frame 3 above the outer cover 21, and the pillars (212, 213 ) are screwed with top pressure screws (31, 32) respectively, and spring sleeves (33, 34) are respectively sleeved on the columns (212, 213), and spring sleeves (33, 34) and Pressure springs (35, 36) are respectively arranged between the screw heads of the pressure screws (31, 32), and the spring sleeves (33, 34) are pressed against the top of the support frame 3 so that the The upper jaw edge 41 of the rigid holder 4a is kept in close contact with the upper edge of the rigid member 22, and moves left and right with the support frame 3 above the outer edge of the rigid member 22. According to the above technical solution, the pressing springs (35, 36) are limited and compressed between the spring sleeves (33, 34) and the screw heads of the pressing screws (31, 32) to press down The spring cover (33, 34) keeps the upper jaw edge 41 of the rigid holder 4a close to the outer edge of the rigid member 22, so that when assembling, the outer edge of the rigid member 22 The above can provide a positioning reference for the assembly and positioning of the rigid holder 4a. Compared with the existing scheme of configuring upper and lower double gaps, the upper and lower positions between the rigid member 22 and the rigid holder 4a are reduced. The operation of controlling the assembly size in the direction reduces the difficulty of assembly. In addition, it is also beneficial to reduce the amount of consumable materials of the rigid holder 4a and reduce the cost. Secondly, it is also possible to form a flexible connection between the support frame 3 and the outer cover 21 . When the high-pressure expansion force pushes the inner cover up during the cooking pressurization process, the rigid member 22 can drive the support frame (3, 3a) to resist the pressing spring (35) through the rigid holder 4c , 36) to float up under the pressure of the elastic top to buffer the high-pressure expansion force, which is beneficial to reduce the high-pressure expansion force transmitted from the inner cover to the outer cover 21, thereby avoiding serious deformation of the outer cover 21 after being stressed . In addition, the rigid holder 4b is disposed in the escape notch 211 , and the upper jaw edge of the rigid holder 4b is also kept in close contact with the outer edge of the rigid member 22 through the above structure.

As shown in Figure 4, the second locking mechanism 100a is used to lock the inner pot 11 and the pot base 1 when placing the inner pot 11 on the pot base 1 before closing the lid connect. The second locking mechanism 100a includes a pair of upper and lower hooks (8, 8a) capable of hooking each other, the upper hook 8 is arranged on the side wall of the inner pot 11, and the lower hook A hook 8a is provided on the pot base 1 . Before closing the lid, when the inner pot 11 is placed on the pot base 1, the upper and lower clasps (8, 8a) are first hooked together to connect the inner pot 11 to the pot base 1 to be locked. Of course, in other embodiments, the upper hook 8 can be arranged on the rigid pot rim 110 of the inner pot 11, so that the second locking mechanism 100a connects the rigid pot rim 110 to the pot base. 1 to be locked. Alternatively, the second locking mechanism may include a pair of magnets capable of achieving mutual magnetic attraction, and the pair of magnets are separately disposed on the inner pot 11 and the pot base 1 . An inner pot release device (not shown in FIG. 4 ) is also provided on the pot base 1, and activation of the inner pot release device can drive the second locking mechanism 100a mechanism to release the locking mechanism between the inner pot 11 and the Locking between pot bases 1. Of course, in other embodiments, when the unlocking device drives the first locking mechanism to unlock the rigid member and the rigid pan edge, it can also synchronously drive the second locking mechanism 100a to unlock The locking between the inner pot 11 and the pot base 1.

The cooking appliance also includes a central controller (not shown in the figure) and a position sensor, the position sensor is used to sense the position signal that the locking mechanism (100, 100a) has completed the double locking mechanism and The position signal is fed back to the central controller, and the central controller is used to determine whether to start heating or pressurization according to the position signal. In this way, the conditions for starting heating or pressurizing of the cooking appliance can be intelligently and effectively controlled by the central controller. For example, it can be controlled that when the locking mechanism (100, 100a) has not completed the double lock mechanism, the pressurization cannot be started but the heating can be started, or neither pressurization nor heating can be started, but only when the locking mechanism completes the The heat or pressurization cannot be activated until the double lock mechanism is in place. Such a control arrangement is beneficial for the cooker to effectively ensure the heating or pressurized cooking effect, meet the cooking needs of the user, and also help optimize the use safety performance of the cooker. Further, the sensor is used to sense the position signal of whether the support frame (3, 3a) or the rigid holder 4 moves toward the center of the outer cover 21 to a predetermined position, and the central controller uses Based on the position signal that the support frame (3, 3a) or the rigid holder 4 has moved to a predetermined position toward the center of the outer cover 21 sensed by the sensor, it is determined to start heating or pressurization, otherwise Do not activate heat or pressurization. Further, it also includes a display, through which the analog signal that the double locking mechanism has been implemented is displayed.

The intermediate transition arm body 5 is often in a stored state and cannot be directly touched and manipulated. In view of this further, the unlocking device 200 also includes a button 7, which is used to respond to the action instruction of opening the cover for the intermediate transition arm body. 5 provides positive movement torque and drives the intermediate transition arm body 5 to move forward. In this way, in response to an allowed lid opening instruction, the locking between the rigid member 22 and the rigid pot rim 110 is automatically released by means of the driving force provided by the lid opening instruction, so as to realize one-key lid opening.

If the rigid holder 4 returns to the locked position before closing the cover after opening, it will definitely affect the next closing operation, so it is necessary to keep the rigid holder 4 in the unlocked position before closing the cover after opening Location. Further in view of this, as shown in FIG. 4 , the unlocking device 200 also includes an unlocking and holding mechanism 300, which is used to allow the intermediate transition arm body 5 to lose its forward movement moment. The intermediate transition arm body 5 remains in the unlocked position. Specifically, the unlocking retainer includes a moving positioning column 9 that is movably arranged on the intermediate transition arm body 5, is arranged between the intermediate transition arm body 5 and the moving positioning column 9, and can drive the moving The retaining spring 91 that the positioning column 9 moves downward, the receiving hole 214 that is arranged on the outer cover 21 for receiving one end of the moving positioning column 9 and is arranged on the pot base 1 facing The protrusion 12 of the receiving hole 214 . When the pot cover 2 is closed, the protrusion 12 can be inserted into the receiving hole 214 to push the moving positioning column 9 out of the receiving hole 214, and at this time, the intermediate transition arm body 5 loses its hold. force and move in the opposite direction and leave the receiving hole 214 with the moving positioning column 9. When the intermediate transition arm body 5 moves forward and completes unlocking, the pot cover 2 starts to turn up, and the moving positioning column 9 not only moves above the receiving hole 214 but also is reinserted into the receiving hole 214 under the driving of the retaining spring 91 to keep the intermediate transition arm body 5 in the unlocked position. In this way, even if the rigid holder 4 is subjected to an external force, it is not easy to move to the center of the outer cover 21 and switch to the locked position by mistake, which will affect the next closing operation of the pot cover 2 . In this way, not only can the cover be opened smoothly, but also the cover can be closed smoothly.

As shown in Figure 4, if the cooking environment in the inner pot 11 is under high pressure and the pot cover 2 is opened rashly, the food in the pot will spray out and burn the user, and even the pot cover 2 will be fried under high pressure. It is very dangerous to fly out and injure the user. So it is necessary to limit the opening conditions of the pot cover 2 . In view of this further, the unlocking action between the rigid member 22 and the rigid pot edge 110 is subject to the inner pot pressure of the inner pot 11, when the inner pot pressure of the inner pot is higher than the threshold value, The unlocking action between the rigid member 22 and the rigid pot edge 110 is limited by the self-locking mechanism 400 . The self-locking mechanism is arranged on the rigid member 22 of the pot cover 2 and can respond to the air pressure in the inner pot 11 . The self-locking mechanism 400 includes a self-locking column 92, and the intermediate transition arm body 5 is provided with a self-locking hole 50 capable of receiving the self-locking column 92. Of course, in other embodiments, the self-locking hole 50 can also be arranged on the support frame (3, 3a). The self-locking column 92 is used to insert the self-locking hole 50 when the internal pressure of the inner pot 11 is higher than the threshold value so that the intermediate transition arm body 5 cannot move on the outer cover 21. Self-locking and stays in locked position. According to the above technical solution, when the inner pot pressure of the inner pot 11 is higher than the threshold value, the movement of the intermediate transition arm body 5 is restricted by the self-locking column 92, and the pot cover 2 cannot be opened at this time. Only when the inner pot pressure of the inner pot 11 is lower than the threshold value, the self-locking post 92 breaks away from the self-locking hole 50 and releases the movement of the intermediate transition arm body 5 can open the pot cover 2 . In this way, the self-locking column 92 restricts the unlocking action between the rigid member 22 and the rigid pot rim 110 in response to the internal pressure of the inner pot 11 , which effectively improves the safety performance of the cooking utensil. In addition, the unlocking action between the rigid member 22 and the rigid pot rim 110 can also be subject to the inner pot temperature of the inner pot 11, when the temperature of the inner pot is higher than the threshold value, through The self-locking mechanism restricts the unlocking action between the rigid member 22 and the rigid pot edge 110 .

In order to be able to drive the support frame (3, 3a) to move automatically, the following driving scheme can also be adopted in other embodiments, the locking mechanism also includes an electric driver arranged on the outer cover 21, the electric driver The support frame (3, 3a) is connected by transmission, and the electric driver is used to drive the support frame (3, 3a) to move toward the center of the outer cover 21 in response to the lid closing command action, and can also respond to The cover opening command transmitted by the unlocking device 200 moves to the outside of the outer cover 21 . According to the technical solution, automatic control of the support frame (3, 3a) can be realized through the electric driver.

According to the above technical solution, it can be found that due to the provision of the double locking mechanism, compared with the prior art, not only the sealing scheme of the inner pot is simplified through the locking between the rigid member and the rigid pot edge, but also Simplifies the lid closure scheme of the entire cooking utensil, especially improves the connection stability and controllability between the outer cover of the pot lid and the pot base during cooking; wherein, the second locking mechanism uses When placing the inner pot on the pot base before closing the lid, the inner pot and the pot base are locked and connected, so that the outer cover is connected with the rigid member and The locking relationship between the rigid member and the rigid pot edge is stably covered on the pot base, and the inner pot can be placed directly on the pot base in a correct posture to ensure the safety of the cooking utensils. Normal use.

The method of opening and closing the pot lid and inner lid of the cooking utensil with separate safety locking structure is as follows: when placing the inner pot 11 on the pot base 1 before closing the lid, put the inner pot 11 and The pot base 1 is locked, and then in response to a cover command action that allows flipping and closing, the rigid member 22 and the rigid pot edge 110 are locked to complete the double locking mechanism to achieve a flipping Lid: in response to an allowed lid opening instruction, release the lock between the rigid member 22 and the rigid pot rim 110 so as to realize one-key opening of the lid. After the one-key opening is completed, in response to an allowed instruction to open the inner pot 11 , the lock between the inner pot 11 and the pot base 1 is released so that the inner pot 11 can be taken out. Of course, it is also possible to simultaneously release the lock between the inner pot 11 and the pot base 1 when the lock between the rigid member 22 and the rigid pot rim 110 is released in response to an allowed lid opening command.

Claims (9)

1. The cooking utensil comprises a cooker base, an inner cooker arranged on the cooker base and a cooker cover hinged on the rear end part of the cooker base in a turnover manner, wherein the inner cooker is provided with a rigid cooker edge protruding outwards, the cooker cover comprises an outer cover and a rigid member arranged below the outer cover, and the cooker cover is used for covering a cooker opening of the inner cooker when being based on a cover closing action; the double-lock mechanism is characterized in that the double-lock mechanism is arranged, and the double-lock mechanism is used for locking the rigid member and the rigid pot edge and locking the inner pot and the pot base under the condition that the pot base and the pot cover are combined; the second locking mechanism comprises a pair of upper and lower hooks capable of realizing mutual hooking, the upper hooks are arranged on the inner pot, and the lower hooks are arranged on the pot base; or the second locking mechanism comprises a pair of magnets which can realize mutual magnetic attraction, and the pair of magnets are respectively arranged on the inner pot and the pot base; when the inner pot is placed on the pot base before closing the cover, the second locking mechanism locks the inner pot and the pot base, and then responds to a cover closing instruction action allowing the cover to be turned over, and locks the rigid member and the rigid pot edge to complete the double-locking mechanism so as to realize the cover turning over and closing; in response to an allowable uncapping instruction, at least unlocking between the rigid member and the rigid rim to effect one-touch uncapping.

2. The opening and closing method of claim 1, wherein after the one-touch opening is completed, the locking between the inner pot and the pot base is released to enable the inner pot to be taken out in response to an instruction to allow the inner pot to be opened.

3. The opening and closing method according to claim 1, wherein the locking between the rigid member and the rigid rim is automatically released by a driving force provided by the opening command in response to an allowable opening command to thereby effect one-touch opening.

4. The opening and closing method according to claim 1, wherein the unlocking action between the rigid member and the rigid rim is limited by the pressure or temperature of the air in the inner pot, and when the pressure or temperature of the air in the inner pot is higher than a threshold value, the unlocking action between the rigid member and the rigid rim is limited by a self-locking mechanism.

5. The method of opening and closing according to claim 4, wherein the self-locking mechanism comprises a self-locking post provided on the rigid member, the self-locking post limiting an unlocking action between the rigid member and a rigid rim in response to an intra-boiler pneumatic pressure or temperature of the inner boiler.

6. The opening and closing method according to claim 1, wherein the rigid member is an inner lid of the lid for covering a mouth of the inner pot upon a closing action.

7. The opening and closing method according to any one of claims 1 to 6, further comprising a first locking mechanism that locks the rigid member and the rigid rim in response to a lid closing action command; and an unlocking device is arranged, and transmits an uncovering instruction to drive the first locking mechanism to unlock the rigid member and the rigid pot edge.

8. The opening and closing method according to claim 7, further comprising a central controller and a position sensor, wherein a position signal that the first locking mechanism and the second locking mechanism are in place is sensed by the sensors, and the position signal is fed back to the central controller, and the central controller determines whether to start heating or pressurizing according to the position signal.

9. The method of claim 8, further comprising a display through which an analog signal that the double lock mechanism has been performed in place is displayed.

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